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Related Experiment Video

Updated: Jan 9, 2026

Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts
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Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts

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High-Efficiency CO2 Electrolysis Enabled by Interface-Engineered Composite Electrolytes in Ni-Based SOEC.

Rustam Yuldashev1,2, Hyunchul Jung1, Ji Hoon Park1,2

  • 1CO2 & Energy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34113, South Korea.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|December 8, 2025
PubMed
Summary
This summary is machine-generated.

A novel composite interlayer prevents electrolyte delamination in solid oxide electrolysis cells (SOECs) for CO2 electrolysis. This enhances structural stability and achieves high performance and durability.

Keywords:
CO2 electrolysisYSZ‐GDC composite layerdelamination suppressiondip‐coatingsolid oxide electrolyte cells

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Chemical Engineering

Background:

  • Interfacial instability between yttria-stabilized zirconia (YSZ) and Gd-doped ceria (GDC) electrolytes causes delamination in solid oxide electrolysis cells (SOECs) during high-temperature operation.
  • This thermal deformation disparity severely degrades SOEC performance and durability, hindering CO2 electrolysis commercialization.

Purpose of the Study:

  • To resolve the interfacial instability issue in SOECs by designing a novel composite intermediate layer.
  • To improve the structural stability, performance, and durability of SOECs for efficient CO2 electrolysis.

Main Methods:

  • Fabrication of a composite intermediate layer using a simple dip-coating process with a mixture of YSZ and GDC powders.
  • Integration of the composite interlayer into Ni-based fuel electrode-supported SOECs.
  • Evaluation of interfacial stability, electrochemical performance, and long-term durability at high temperatures.

Main Results:

  • The composite interlayer effectively mitigated thermal deformation disparity, ensuring excellent structural stability without delamination after high-temperature sintering.
  • The cell with the composite interlayer exhibited significantly reduced interfacial resistance and achieved a high current density of 2.14 A cm⁻² at 800 °C.
  • The SOEC demonstrated excellent long-term stability, retaining 91% of its initial performance after 80 hours of continuous operation under a harsh condition.

Conclusions:

  • The engineered composite interlayer provides a robust solution to electrolyte interfacial instability in SOECs.
  • This interface engineering strategy enables the development of high-performance and durable SOECs for CO2 electrolysis applications.